Let me start off by saying I stated several times how much I disliked Eureka and Bozja, and would rather run Tamtara normal in Duty Finder synced a thousand times than do anything in either of those two areas again. And I still hold to that. I do not like Eureka or Bozja, and I especially don't like how difficult it is to do them when they're not relevant any more and depend on others to participate. I'd rather just solo queue Duty Finder, get 4-24 randoms that are all there from Roulettes, or grind some Fates I can do my self for small progress.
I stated several times how much I prefer being able to do a variety of tasks to accrue progress towards my relic, even if it's small and incremental, so that I may choose the way I grind them. I quite enjoy the ARR and HW relic methods of obtaining, having done several of each, many of which while they were relevant. Mostly because I can do them with a variety of methods, rather than "just Eurkea" or "just Bozja."
So, Endwalker was closer to what I like but still missed the mark on several things. The first, and most obvious, is that 1500 Tomes per "step" is really small. Just a few days of Dailies is enough to fully cover a single relic from beginning to end, and you can do that even faster with things like Hunts or even Crystaline Conflict. I do like all the ways you can get Tomes to cover these so I'm not limited to a dead zone like Eureka, but instead of using Tomes, I think it would've been better to have unique currencies that you obtain much slower doing the same things. This is why steps like the Books, or Atma, or Crystal Sand/Umbrite were all much better. Even after they had their amounts reduced, they're still grindy enough to be long term goals and payoff. And the methods of obtaining them are still viable today without needing external resources like Discord groups or depending on other peoples' interests.
I'll leave the discussion about the aesthetics of the relics in Endwalker to a minimum, but they're mostly pretty terrible especially compared to how good the ARR/HW relics are. There's only a small handful of SB-EW relics I enjoy, and none of them are final stage. So far, most of the best EW relics are the step right before the final. The DRK one in particular is pretty good, because it has two separate glows on it at the same time instead of pulsating between two colors without being a truly abhorrent shape. Well done, I like this one a lot!
So, my main feedback is that no more forced Eureka or Bozja ever again, but also make it harder than just 1500 Tomes per step. Good job on letting us choose our methods of grind, keep that up. The Manderville quests were great and a treat, I enjoyed them in EW almost as much as I enjoyed the other Hildibrand episodes, another good job.
That is my feedback, thank you for no Eureka/Bozja, but make it harder than 1500 Tomes.